Learning to play the bass guitar – learn the notes all the way down the neck of the bass guitar on the top two bass guitar strings.  They are as follows –

E open position, 1^st fret F, 3^rd fret G, 5^th fret A, 7^th fret E, 8^th fret C, 10^th fret D, 12^th fret E (double dots).

A open position – 2^nd fret B, 3^rd fret C, 5^th fret D, 7^th fret E, 8^th fret F, 10^th fret G, 12^th fret A (double dots).